However, the calculated masses were not in good agreement with the previous studies. This discrepancy in the mass calculation could possibly be rooted in the difference in the methods adopted to cancel out the effect of stellar activity signals from the RV data. Furthermore, no signal was found in the periodogram of activity indicators at 9.02 days, and thus this RV signal was attributed to a third-planetary companion in the system, CoRoT-7d. This signal was previously detected by [1]} as well, but had been attributed to a ‘two frequency beating mode’ arising from an amplitude modulation of a 61 days signal. It was therefore deemed to be associated with stellar activity, as this 61 days signal is quite close to twice the stellar rotation period.
Subsequently, [2]} argued that the data cannot be used to search for additional (non-transiting) planets in the 3–10 d period range and that claims of the detection of such planets (‘CoRoT-7c’ and ‘CoRoT-7d’) do not withstand scrutiny.
